|
Correct Answer: retest the control.
when a control shows an unacceptable result in a laboratory test, it is essential to follow a specific procedure to ensure the accuracy and reliability of test outcomes. here is an expanded explanation of the steps involved:
**identify the problem:** the first step is to determine whether the control result is truly indicative of a problem. this involves reviewing the control result to confirm that it falls outside the accepted range. factors such as environmental conditions, operator error, or equipment malfunction should be considered as potential causes of the abnormal result.
**retest the control:** once an issue is suspected based on an initial unacceptable result, the immediate next step is to retest the control. this is crucial because a single aberrant result can sometimes be due to a transient or procedural error rather than a systemic problem. by retesting, the laboratory can verify whether the first result was a false alarm or if there is indeed an issue that needs further investigation.
**evaluate retest results:** if the retest of the control yields a result within the acceptable range, it suggests that the initial unacceptable result may have been an anomaly. in this case, normal testing procedures can resume, as the system is likely functioning correctly. however, if the retest also shows an unacceptable result, this indicates a more serious issue that requires further action.
**investigate and correct underlying issues:** persistent unacceptable results after retesting necessitate a deeper investigation into the potential causes. this could involve examining the testing equipment for faults, verifying reagents and samples for integrity, and assessing the techniques used by laboratory personnel. necessary corrections or repairs should be made to resolve any identified issues.
**document findings and actions:** throughout the process, it is important to document all findings, actions taken, and outcomes. this documentation is crucial for quality control and for future reference should similar problems arise again. it also helps in maintaining the credibility and accountability of the laboratory.
**resume normal operations:** once the issue has been resolved and the control tests return to normal, regular laboratory operations can continue. it is important, however, to remain vigilant and monitor subsequent test results closely to ensure that the problem has been fully rectified.
in summary, retesting the control is a critical first response to an unacceptable result, serving as a preliminary check before more drastic measures are considered. this approach helps to prevent unnecessary disruptions in laboratory operations and ensures that decisions are based on accurate and reliable data.
|
